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林产化学与工业

林产化学与工业 ›› 2003, Vol. 23 ›› Issue (04): 75-78.

• 研究报告 • 上一篇    下一篇

改性蛋白石用作纸浆H2O2漂白稳定剂的研究

钱学仁, 安显慧, 刘文波, 于钢   

  1. 东北林业大学 材料科学与工程学院, 黑龙江 哈尔滨 150040
  • 收稿日期:2003-02-17 修回日期:1900-01-01 出版日期:2003-12-30 发布日期:2003-12-30

STUDY ON MODIFIED OPAL AS STABILIZER IN HYDROGEN PEROXIDE BLEACHING

QIAN Xue ren, AN Xian hui, LIU Wen bo, YU Gang   

  1. College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China
  • Received:2003-02-17 Revised:1900-01-01 Online:2003-12-30 Published:2003-12-30

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摘要： 对改性蛋白石用作纸浆H2O2漂白稳定剂的可能性进行了考察,结果表明,纸浆H2O2漂白过程中采用改性蛋白石替代Na2SiO3作稳定剂是可行的。在相同用量下,麦草浆和脱墨浆的白度均可提高3%(ISO)以上。与蛋白石相比,改性蛋白石对纸浆H2O2漂白的稳定效能显著增强。对于改性蛋白石作稳定剂的纸浆H2O2漂白,在一定范围内提高温度和延长时间对漂白有利。适宜的工艺条件为:浆浓10%,H2O23%,NaOH1.5%,改性蛋白石3%,时间60min,温度70℃以上。在此条件下漂白麦草浆,白度增值可达16%(ISO)以上。此外,改性蛋白石用作纸浆H2O2漂白稳定剂时,添加少量MgSO4对漂白有利,添加0.05%MgSO4可提高纸浆白度约1%(ISO)。

关键词: 过氧化氢, 纸浆漂白, 改性蛋白石, 稳定剂

Abstract: The possibility of modified opal as the stabilizer in hydrogen peroxide bleaching was investigated.Results showed that modified opal in place of sodium silicate as the stabilizer in hydrogen peroxide bleaching is feasible.At the same dosage, more than 3%(ISO) of brightness can be increased for both wheat straw pulp and deinked pulp.The stabilizing ability of modified opal in hydrogen peroxide bleaching of pulp is improved markedly.It is favorable for bleaching to increase temperature and time within a permissive extent.Suitable process conditions are 10% of pulp consistency, 3% of hydrogen peroxide, 1.5% of sodium hydroxide, 3% of the modified opal, 60 min and over 70℃ when modified opal is used as the stabilizer in hydrogen peroxide bleaching.Under these conditions, the brightness gain can reach more than 16%(ISO) for wheat straw pulp.In addition, it is favorable for bleaching to add a little amound of magnesium sulfate when the modified opal is used as the stabilizer in hydrogen peroxide bleaching, the brightness of pulp can increase 1%(ISO) if 0.05% of magnesium sulfate is added.

Key words: hydrogen peroxide, pulping bleaching, modified opal, stabilizer

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